Adjustable recessed lamp



May. 11, 1954 H T 2,678,381

v ADJUSTABLE RECESSED LAMP Filed Jan. 19, 1951 3 Sheets-Sheet l flah- 35 Z9 Z8 Z 5 JNVENTOR. NATHAN RODNEYSCHWfiKTZ.

A TTOFNE If May 11, 1954 N. R. SCHWARTZ ADJUSTABLE RECESSED LAMP Filed Jan. 19, 1951 3 Sheets-Sheet 2 INVENTCR. M4 THAN RODNE Y 5 C H WA? 7' Z.

ATTOKNEK y 1954 N. R. SCHWARTZ 2,678,381

' ADJUSTABLE RECESSED LAMP F1186 Jan. l9, 1951 5 Sheets-Sheet 3 Patented May 11, 1954 ADJUSTABLE RECESSED LAlVIP Nathan Rodney Schwartz, New York, N. Y., as-

signor to Naras Research, Inc., New York,

Application January 19, 1951, Serial No. 206,745

1 Claim.

This invention relates broadly to lighting units and more particularly to a lamp ,which is primarily intended for use by members of the medical profession, such lamp being commonly referred to as a surgical lamp.

The primary object of the resent invention is to provide a lamp for the illumination of the interior of an ambulance. Ambulances are commonly equipped to accomodate six patients, and they generally have a lamp in the ceiling, which casts its rays directly downward. However, inasmuch as cots for the occupants of the ambulance are positioned along two opposite walls of the ambulance, it is difficult to administer food or treatment because of dim and insufficient illumination.

In order to eliminate this condition, it is the principal object of the present invention to provide a lam for the interior of an ambulance, which may be secured to the ceiling of the ambulance, and which is adapted to be turned angularly up to 90 of its normal axis.

And it is a further aim of the present invention to provide a lamp of this character, which may be turned substantially one complete revolution in either direction.

And a yet further aim of the present invention resides in the provision of means to limit the angular and the rotative movements of the lamp.

And a still further purpose of the present invention resides in the provision of means to lock the lamp in its normal position.

And another feature of the present invention lies in the provision of a wire chamber in a lamp of this character, in which excess wire may be housed and its twisting during the rotation of the lamp prevented.

Another purpose of the present invention resides in the provision of a lamp of this character, which may be 50 adjusted that its rays may be cast in any desired direction, the arrangement being such that the lamp will automatically retain any of its adjusted positions until such time as the adjusted position is manually altered.

These and other meritorious aims and advantages are achieved by the novel construction, combination and arrangement of parts, hereinafter described, and illustrated in the accompanying drawing, forming a material component of this disclosure, and in which:

Figure 1 is a bottom plan view of a lamp made in accordance with the present invention.

Figure 2 is a side elevational view of the lamp illustrated in Figure 1.

Figure 3 is a sectional view of alarm of the present invention, the section being taken on line 3-3 of Figure 1, the lamp being shown in its normal position in the housing, and in an adjusted position, the latter being illustrated in dot and dash lines.

Figure 4 is a top plan view of Figure 3, partly broken away.

Figure 5 is a detail view in section, the section being taken on line -55 of Figure 4.

Figure 6 is a view taken on line 6-6 of Figure 3, showing the lamp in one of its adjusted positions.

Figure '7 is a plan view of the front of a lamp, showing a louver with which it may be provided.

Figure 8 is a side view in half cross section of the view illustrated in Figure 7.

Referring in greater detail to the drawing, the numeral 25 designates in general a lam made in accordance with the present invention, which comprises a cylindrical wire housing 26 having a roof at one end, its other end terminating in an outstretched flange 2'1. 7

The lamp further comprises a hollow cylindrical shell 28 the diameter of .which is slightly less than the diameter in wire housing 26, so that the shell may be entered into and retained. in housing 26, as will hereinafter become more fully apparent. Somewhere on its wall, shell 28 may be provided with a conventional switch lever 29.

Movably retained in the shell 28 is a dome shaped bulb housing it the open end of which is adapted to have entered therein a bulb 30, over the lens, which is here illustrated as being concavo-convex in cross-section, there may be positioned a louver 3 I On one point on its periphery, shell 28 may have a lock screw 32 passing therethrough. In order to facilitate the manipulation of bulb housing 48, a handle 33 may be provided near the edge of housing 48. Housing i8 is hingedly secured to shell 28 by means of a swivel hinge 69 which will hereafter be more fully described.

Flange 2'? may be provided with a plurality of spaced-apart openings 35 about its periphery for the passage of fastening means such as screws therethrough, by means of which the lamp may be secured to the roof iii of an ambulance, the roof being shown in dotted lines in Figure 3, the attachment here illustrated being such that wire housing 26 is embedded in the ceiling of the ambulance up to flange 21, the lower face of membar 2"! being exposed. An opening may be provided in the center of the roof of housing 25, which may be closed by cover plate 38, the cover plate being provided with openings for the pas sage of screws 39 or other fastening means therethrough, retainable by nuts 40 or the like. Cover plate 38 is preferably positioned on theouter side of the roof of housing 26, the inner side of the housing having a swivel plate 44 positioned there in, plate or cover 44 being provided with a plurality of openings which are adapted to be brought into alinement with the openings in the cover plate 38, so that screws 39 will pass through the openings in both covers. Plate l4 may be provided on its inner face with a stop knob 4i adapted to engage a stop flange 42 secured by rivets or otherwise to housing 26 and so positioned that it will lie in the path of knob 4|. Swivel members 59 are secured to a swivel bracket 45 which is attached by rivets or otherwise to the inner face of housing 28, each swivel member having a neck which extends into the bulb housing d8 near the rim thereof, where each neck is secured by a bolt 41 or in any other desirable and suitable manner. The inside of housing 26 is tapered as at 45. For the purpose of insulation, housing file may be provided with asbestos, as at 48c, or any other suitable and desirable material. A pair of swivel members 69 are used to permit angular adjustment or" the lamp.

Bulb Eli may contained in a flange member 59 having a plurality of spaced-apart brackets 52, each bracket being provided with a slot 53, each of said slots adapted to receive a screw which extends inwardly from the interior of hous ing t2, whereby the inward movement of the bulb into the housing is limited. There may also be provided in flange 59 a plurality of spaced-apart sleeves 55, each of which is adapted to receive a screw 55 by means of which the bulb 35 is re tained in sleeve 52. Housing zit may also be provided with an opening which, when the lamp is in its normal or retracted position, is adapted to receive screw 32 in order to lock the lamp in that position. Bulb 32, at its widest point, may be provided with a bead 58, which is conventional with bulbs of this type, which is adapted to seat in flange 513. A conventional switch 55 may be provided in housing 28, conventional plugs, such as iii, 52 and 63 may be provided, air openings such as at til and 55 may be provided, and flange member 5e may have an outer wall 65 and an inner wall 58, the inner wall being adapted to have a plurality of baffles secured thereto, said baiiies forming the louver 3i. The several vii-es used in conventional wiring are illustrated at W3, W2, W5 and W4 and arrows A! and A2 indicate the direction of swiveling. The edge of housing t3 is turned inwardly to form an excentric flange G9.

The lamp operates as follows: Inasmuch as the preferred use for the lamp hereabove described is in an ambulance, provision has been made to mount it in and attach it to the ceiling of an ambulance. Housing 25 has been provided for that purpose. After an opening has been made in the ceiling of an ambulance the opening being as large as the diameter of housing 26, the lamp is entered therein up to flange 2'? and is there secured in any convenient and desirable manner. When the lamp is in its normal or retracted positicn, itrnay be desirable to lock it in that position since, when the ambulance travels over bad roads it is possible, although extremely unlikely that the lamp may swivel angularly. To lock it, screw 32 is turned by its knob and will enter opening ill in housing 48. It may be desired to cause the rays of the lamp to be cast upon the right hand side or the ambulance or upon the left hand side or in any other desirable direction. Screw 32 is then withdrawn from the housing 48 and the lamp may be hingedly withdrawn from housing 4%. Handle 33 has been provided to facilitate the manipulation of the lamp, the handle being provided preferably at a point diametrically opposite the swivel means. The housing 38 and the bulb 3! secured thereto may be moved up to of its normal axis and will remain in any adjusted position. The lamp may also be rotated substantially one complete revolution in either direction. Housing 26, being mounted to a support, will remain stationary. Since swivel plate 44 is secured to housing 26 and cover plate 38, it remains stationary, shell 28 in which housing 48 is secured, rotates, and when flange 42 makes contact with knob 4! which is formed on swivel plate ll, rotation in that direction is stopped, and the lamp must be turned in the other direction.

Many uses can be found for this lamp in addition to the one hereabove indicated. It can be used with great effectiveness by a dentist. In such use, the attaching means might be so modilied that the lamp can be attached to a support on or in association with a dentists chair. Another modification might be in the use of more swivel units than are indicated in the drawing, or in the use of only one swivel unit. It might also be desirable to attach the lamp to an ambulance in a manner other than here indicated by attaching it to the surface of the ceiling instea of partly imbedding it in the ceiling.

There has thus been shown a universally adjustable surgical lamp in the best known form oi its construction. However, applicant reserves the right to make such changes in the construction of the device as might come within the scope or" the appended claim, without thereby departing either from the spirit or the scope of the appended claim, since the present disclosure is to be regarded merely as illustrative and descriptive of one of the forms and not as limitative or restrictive to the exact details shown.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent, is:

In a universally adjustable surgical lighting fixture having a retractable lamp adjustable about vertical and horizontal axes, a hollow wire box having a side wall and a roof, a cover plate on the outer face of said roof, a swivel plate on the inner face of said roof means joining said plates and closing said opening, a hollow shell in said wire box extending partly there from, said shell rotatably retained in said wire box, means cooperating between said Wire box and said shell limiting the rotative movement of said shell, a lam hingedly mounted in said shell, and means extending through said shell and the wall of said lamp releasingly locking said lamp in said shell.

References Cited in the file of this patent UNITED STATES PATENTS March 29, 1949'. 

